body, html
  line-height: 1
  font-weight: 200
  font-family: "PinFang SC", 'STHeitiSC-Light', 'helvetica-Light', arial, sans-serif

.clearfix
  display: inline-block
  &:after
    display: block
    content: '.'
    height: 0
    line-height: 0
    clear: both
    visibility: hidden

@media (-webkit-min-device-pixel-ratio: 1.5), (min-device-pixel-ratio:1.5)
  .border-1px
    &::after
      -webkit-transform: scaleY(0.7)
      transform: scaleY(0.1)

@media (-webkit-min-device-pixel-ratio: 2), (min-device-pixel-ratio: 2)
  .border-1px
    &::after
      -webkit-transform: scaleY(0.5)
      transform: scaleY(0.5)

rem(val)
  val/75rem

/*动画库*/
@keyframes dong
  0%
    opacity 1.0
    transform scale(0.8) rotate(0deg)
  33%
    opacity 0.75
    transform scale(1) rotate(-5deg)
  67%
    opacity 0.5
    transform scale(1) rotate(5deg)
  100%
    opacity 1.0
    transform scale(0.8) rotate(0deg)



